Nike Air Force 1 Low Crater Flyknit Black Chambray Blue Size 10.5 Used in Great Condition See all pictures! The Men's Nike Air Force 1 Crater Flyknit is a casual shoe made with at least 20% recycled material by weight. It features a linen-like appearance and an airy FlyKnit upper that stretches to fit the foot. The shoe also has Supersoft Crater foam, which is made from recycled materials and adds spring to the step